Hardness Reagent Set, 8-1000 µg/L Ca & Mg as CaCO₃

Product #: 2603100-MY

Brand: HACH

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Ultra-Low Range Total Hardness Testing for High-Purity Water

The Hardness (ULR) Reagent Set, Solution Pillows (2603100) is designed for ultra-low range measurement of calcium and magnesium hardness in high-purity water applications using the Chlorophosphonazo colorimetric method (Hach Method 8374, DOC316.53.01044).

This reagent set enables accurate determination of total hardness as CaCO₃ at concentrations far below traditional titration.
Hardness (ULR) Reagent Set, Solution Pillows (2603100) are designed for ultra-low range measurement of calcium and magnesium hardness in high-purity water applications

Key Features & Benefits
Ultra-Low Range Hardness Detection
Measures total hardness over the range of:
8 - 1000 µg/L Total hardness as CaCO₃ using a standard plastic cell (PN 2410222)

Ideal for High-Purity Water Applications
Designed for monitoring trace hardness in:
• Municipal pretreatment
• Membrane protection
• Groundwater and source water monitoring
• Reverse osmosis (RO) systems
• Demineralizer trains
• High-pressure boiler systems
• Semiconductor and ultrapure water processes
• Zeolite water softening system
• Pharmaceutical (makeup water)

Solution pillow format supports approximately 100 tests and is ideal for laboratories and facilities performing routine, ultra-low level hardness monitoring.